Example: Design a 4-input (A,B,C,D) digital circuit that will give at its output (X) a logic 1 only if there more ones than zeros in the binary number formed at the input. Inputs Output X = АвсD 00 0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 5 0 1 CD АВ 00 01 11 10 1 1 4 00 1 0 1 01 6 1 1 11 1 1 1 0 0 0 0 0 1 0 1 0 1 1 0 0 0 1 1 1 0 7 8 1 10 9 1 10 1 11 1 12 1 13 1 14 1 15 1 1 X = 1 1 1 1 A B 23

Example: Design a 4-input (A,B,C,D) digital circuit that will give at its output (X) a logic 1 only if there more ones than zeros in the binary number formed at the input. Inputs Output X = АвсD 00 0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 5 0 1 CD АВ 00 01 11 10 1 1 4 00 1 0 1 01 6 1 1 11 1 1 1 0 0 0 0 0 1 0 1 0 1 1 0 0 0 1 1 1 0 7 8 1 10 9 1 10 1 11 1 12 1 13 1 14 1 15 1 1 X = 1 1 1 1 A B 23

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Designing Combinational Logic Circuits Exercise
Example: Design a 4-input (A,B,C,D) digital circuit that will give at its output (X) a
logic 1 only if there more ones than zeros in the binary number formed at the input.
Inputs
Output
X =
АвсD
0 0 0 0
1
0 0 0
0 0 1
0 0 1
0 1 0 0
0 1 0 1
1
CD
2
АВ
00 01 11 10
3
1
4
00
01
1
1
11
0 1
0 0 0
1 0 0 1
10 1 0 1
11 1
7
1
1
8
1
10
9
0 1
1 0 0
1
12 1
13 1 10 1
14 | 1
15 1
X =
1 1
1
1
1
А в С D
X X

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